Depending on temperament, I suggest LSD. Set aside 8 hrs you
   won't need. Get ready for specialfx. I've tried a bunch (just
   the 'classics' I suppose) and that was the only one that was
   worthwhile for the trouble. I'd stay away from opiates and
   derivitives because they're physically addictive. I don't think
   many of the others are physically addictive, unless you count
   nicotine - which *really* is addictive too. Crack I tried twice.
   Crack was strange: I liked it and initially had the strong want
   for more (for about 4 hrs) but after that, nothing except for
   one peculiar thing: For 10 years afterwards, I could TASTE it
   right in the back of my throat just thinking about it. I can
   describe it: a burnt sweet plastic taste... but I can't taste it
   anymore. I'd smell it from far away. I didn't feel compelled to
   have any - just a weird taste-memory. It's gone completely now
   though. But 10 years... man. Long time. And the 8 hrs for LSD?
   That's 4 hours of fun and 4 hours of, "ok, I REALLY want to go
   to sleep now...this is annoying". = There would be though. The
   difference is who is pocketing the profit. Many will have their
   hands out for it. It would have to be strictly laid out and
   negotiated between numerous parties for it even to be
   considered, especially in very large countries like the USA. The
   price point would have to be comparable to current black-market
   prices otherwise they wouldn't have much impact on current
   procedures. == Alas, our planet is full of humans. I don't know
   if such a thing is possible, except perhaps in small
   communities. [the 150-or-less rule: anything over 150 ppl and
   it's difficult to maintain a hierarchy-free subculture] ==